[LightDM] Greeter and other clients cannot connect to X server

[Robert Ancell]

For anyone following this thread:
- Bug is https://bugs.launchpad.net/bugs/1260220.
- We have a candidate fix which is syncing the X authority before starting
the X server.
- One person indicates this has fixed the problem for them.
- I haven't been able to reproduce locally, so this fix is just an educated
guess. If this is the correct fix it probably depends on how fast your IO
is and what sort of filesystem / storage hardware you are using.

--Robert


On 27 November 2013 23:33, Guido Berhoerster <gber at opensuse.org> wrote:

> * Robert Ancell <robert.ancell at gmail.com> [2013-11-26 04:51]:
> > The first place to look should be the X authority file - perhaps it has
> got
> > corrupt for some reason? If you could copy it from inside the scripts
> > before and after they run it would be useful to analyse. The authority
> file
> > is deleted once the X server stops.
>
> I've had one of the users extract the xauthority file[*] before
> starting the X server (by wrapping the xserver-command) and at
> the beginning of the greeter-setup-script, based on a quick
> examination with xauth the seem intact, yet tools in the same
> greeter-setup-script cannot connect.
>
> * https://bugzilla.novell.com/show_bug.cgi?id=846832#c11
>
> >
> > Unfortunately xlib/xcb is not very good at reporting why it can't connect
> > to the X server :(
>
> I'm completely in the dark, any other ideas? Should I open a bug
> on launchpad yet?
> --
> Guido Berhoerster
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